Bolleb side bearing



Q A. STUCKI.

ROLLER SIDE BEARING.

APPLICATION FILED FAY 2a. 191% 1,803,986: Patent/ed May 20, 1919.

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ROLLERVSIDE BEARING.

Specification of Letters Patent. Patented May 20, 1919.-

Application filed May 28, 1918. Serial No. 236,999.

' allows for the full angular movement of the car bolsters with a relatively limited or short travel of the anti-friction deyice; one

in which the bearing surfaces are straight and plain from end to end, and which, as

well as the anti-friction member itself, can

be formed by rolling and therefore made of high grade steel, which adds to their .ability to withstand severe service; one

which is easy to inspect,- which is not liable to become clogged with dirt, ice, or the like, which will not rattle, and in which the antifriction roller will always be in proper position.

In the accompanying drawings, Figure 1 is in part a side elevation and in part a vertical section of the device taken transversely of the car bolsters; Fig. 2 is in part an end elevation and in part a vertical section through the device on a plane longitudinal of the car bolsters; Fig. '3 is a view cor responding to Fig. 1 showing a modification of the spring centering means; and Fig. 4: is a detailed view of one of the spring elements of Fig. 3'.

In the drawings, 1 represents a portion of the body bolster, 2 a portion of the truck bolster, 3 the upper bearing plate carried by the body bolster, and i the bottom hearing plate carried by the truck bolster. The latter is shown connected directly to the truck bolster and is a plain flat-surfaced plate, without flanges, projections, or the like, so that it can be formed by rolling from high grade steel. The upper bearing also, if desired, be secured directly to the body bolster, but, as shown, is secured to a bearing member 5 secured to The upper bearing plate 3 may also, if desired, be a fiat plate, but preferably it is provided with shallow defor the purpose of guiding the interposed anti-friction member,

which is inthe of a roller 8 with a plain surface so that it can be formed from apiece of cold rolled shafting or steel, and

which roller is adapted to travel between the upper and lower bearing plates.

For the purpose of returning this roller to central position when the bolsters are in' normal position, I provide suitable spring means which not only, centers the roller but also holds it in contact with one of the bearing surfaces and thereby prevents rattling.

As illustrated, the roller is provided with an axial bore through which extends,-

loosely, a circular axle 9, with its ends pros jecting beyond the ends of the roller. Oper atively connected to these ends are spring means, the means shown in Figs. 1 and 2 comprising a pair of helical tension springs 10 at each end of the roller, each spring at one end being provided with an'eye or loop 11 which encircles the end portion of the axle, and at its opposite end with a hook or the like 12 engaging in an eye 13 on the bearing member 5. axle outside of the-springs are provided with a head, collar or nut 14 to hold the parts in position, and if needed, or desired, additional means such as a cotter pin 15 may be employed.

Figs. 3 and 4 show a modification of the spring means whereby the-springs are put under compression. As here shown, the

The ends of the with its ends bearing against followers 16, and with a pair of rods 17 and 18 extending through holesin the followers 16, in opposite directions, and provided at their ends with nuts 19 or the like, bearing against said followers; the rod 17 being provided with an eye 20 engaging the axle 9, while the rod 19 is provided with an eye 21 engaging a pin 23 carried by the bearing member 5. The action of this modification is exactly the same as that shown in Figs. 1 and 2, except that the springs act by compression, while those of Figs. 1 and 2 act by tension.

The operation ofthe device is as follows:

Normally, when the bolsters are cleared, the roller 8',is held by the springs 10 or 10 in its central position, and in contact with the upper bearing plate, so that it is pre vented from, rattling. When the body bol;

roller 8 travels toward one end of the bearing plates, affording a bearing which is sub- I stantially frictionless. In the travel toward one end of the bearing plates, in the .form shown in Fig. 1, the springs on the side toward which the roller travels are put under compression and those on the opposite sides are put under tension, while in the form shown in Figs. 3 and 4, the springs on the side toward which the roller travels expand while those on the opposite side areput under compression. As soon as the bolster again rises, the springs on the opposite sides of the roller return to an equal condition of compression or tension, as the case may be, and therefore return the roller to its central position so that it is in proper position to roll in either direction when the olsters again come together and the truck swivels under the car.

With the construction shown, the roller need have only a short bodily movement due to the fact that there is a double travel, one at its bottom and one at its top. Consequently, the roller can be cylindrical without producing any material amount of slippage due to the arcuate movement of the bolsters. If desired, however, the roller can be made conical and thereby well adapted for a very long travel in an arcuate path.

It is also obvious that the roller instead of being connected to the upper bearing member, as illustrated, can be similarly connected to the lower bearing member, and in that case will be held in contact with the lower bearing member.

The side bearing described provides for a large relative movement between the body bolsters with a very short travel of the roller; it enables the use of straight bearing plates and a plain faced roller, without in ter-engaging teeth or other means and thereby enables these parts to be formed by a rolling process and consequently formed of very durable metal so that it will withstand severe service; it does not rattle, is easy to inspect, prevents the roll from becoming askew, but nevertheless insures the roller always being in proper position to roll'in either direction whenever the bolsters come together. The movement is a true rolling one and hence the bearing is substantially frictionless.

WhatI claim is:

1. In an anti-friction side bearing, the combination with plain flat upper and lower caring members, of an interposed roller provided with an axle, spring means at each end of said roller and directly connected to said axle and serving to center the roller and hold it against one bearing member, and

means on the ends of the axle to retain said spring means.

2. In an anti-friction side bearing, the

combination with plain fiat upper and lower bearing members, of an interposed roller provided with an axle loosely extending of their ends provid' through said roller, spring means at each endof said roller directly connected to said axle and serving t center the roller and hold it against one bearing member, and means pn the ends of the axle to retain said spring means.

3. In an anti-friction side bearing, the combination with upper and lower bearing members, of an interposed roller provided with an axle, and a pair of spring means each including a helical opening, said means having one of their ends connected to the roller axle and extending oppositely therefrom and inclined toward one of the bearing members and having their opposite ends connected to said bearing members and serving to center the roller and hold it against said bearing member.

4. In an anti-friction side bearing, the combination with upper and lower bearing members, of an interposed roller provided with an axle, a pair of spring means, each including a helical spring, at each end of the roller, each pair having one of their ends having their opposite ends secured to said bearing member and serving to center the 1:gller and hold it against said bearing mem- 5. In an anti-friction side bearing, the

combination with upper and lower bearing members, of an interposed roller provided with an axial opening, a pair of spring means, each including a helical spring, at each end of said roller, each pair having one of their ends provided with eyes and extending oppositely from the roller and inclined toward one of the bearing members and having their other ends secured to said bearing member, and an axial pin extending through said eyes and the a-xialopening in the roller.

6. In an anti-friction side bearing, the combination with upper and lower bearing members, of an interposed roller provided with an axial opening, a pair of spring means, each including a helical spring, at each end of said roller, each pair having one d with eyes and extending oppositely f In the roller and inclined toward one of the bearing members and having their other ends secured to said bearing member, an axial pin extending through said eyes and the axial opening in the roller, and means on the ends of. said axial pin for retaining said spring means. I

In an anti-friction side bearing, the combination with upper and lower bearing members, of an interposed roller provided with an axle, and a pair of adjustable spring means having one of their ends connected to .the roller axle and inclined therefrom toward one of the bearing members and hav ing their opposite ends secured to said hearing member and serving to center the roller and hold the same against said bearing member.

8. In an anti-friction side bearing, the combination with upper and lower bearing members, of an interposed roller provided with an axial opening, a pair of adjustable spring means at each end of said roller, each pair having one of their ends provided with eyes and extending oppositely and inclined toward one of the bearing members and having their opposite ends secured to the said bearing member, and an axial pin extending through said eyes and the axial 15 opening in the roller.

In testimony whereqij I have hereunto set my hand. l

ARN OLD STUCKI.

Witness V GLENN H. LERESCHE. 

